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Cutting speed may be defined as the rate at the workpiece surface, irrespective of the machining operation used. A cutting speed for mild steel of 100 ft/min is the same whether it is the speed of the cutter passing over the workpiece, such as in a turning operation, or the speed of the cutter moving past a workpiece, such as in a milling operation.
Canned cycles automate certain machining functions such as drilling, boring, threading, pocketing, etc... [1] Canned cycles are so called because they allow a concise way to program a machine to produce a feature of a part. [2] A canned cycle is also known as a fixed cycle. A canned cycle is usually permanently stored as a pre-program in the ...
They are often used at the end of the threaded portion of a shaft or screw to provide clearance for the cutting tool, and also referred to as thread relief in this context. A rule of thumb is that the undercut should be at least 1.5 threads long and the diameter should be at least 0.015 in (0.38 mm) smaller than the minor diameter of the thread ...
Over the years, in the manufacturing industry, with the improvement of the difficulty of product processing, the emergence of CNC turning milling compound centers, which maintains the characteristics of lathe machining, but also increased the function of the milling machine, the combination of the two to improve production efficiency.
Phrased in another way, the MRR is equal to the volume of residue formed as a direct result of the removal from the workpiece per unit of time during a cutting operation. The material removal rate in a work process can be calculated as the depth of the cut, times the width of the cut, times the feed rate .
Surface feet per minute (SFPM or SFM) is the combination of a physical quantity (surface speed) and an imperial and American customary unit (feet per minute or FPM).It is defined as the number of linear feet that a location on a rotating component travels in one minute.
The time spent immersed in the chemical bath determines the depth of the resulting etch; this time is calculated via the formula: E = s t {\displaystyle E={\frac {s}{t}}} where E is the rate of etching (usually abbreviated to etch rate ), s is the depth of the cut required, and t is the total immersion time.
In manufacturing, an undercut is a special type of recessed surface that is inaccessible using a straight tool. In turning, it refers to a recess in a diameter generally on the inside diameter of the part.
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